韩国汉语学习者的礼貌用语教学研究

张蕊 ( Zhang¸ Rui ) 중국어문학회 2021 中國語文學誌 Vol.- No.74

Chinese and Korean have differences in traditional culture, way of thinking, psychological quality and customs due to their different nationalities. These differences are also reflected in the polite expressions that reflect social etiquette norms. This paper first combed the definition of Chinese politeness and politeness principles, and analyzed the differences and similarities between Chinese and Korean in politeness terms through specific examples. Secondly, a questionnaire survey is conducted among Korean undergraduates who have different degrees of Chinese learning experience. It analyzed the misuse and characteristics of Korean students’ Polite expressions, and understands the interference factors in the acquisition of polite expressions “Depreciate yourself and respect others” is one of the five principles of polite language in Chinese, and it is also the center of the five principles, and is an important connotation of Chinese culture. Chinese polite language requires high vocabulary changes. Different pragmatic phenomena will produce different polite effects. In the choice of wording, full consideration should be given to the identity, age, and occasion of both parties in the conversation. On the one hand, Korean uses a respectful vocabulary system to highlight the speaker’s respect for the other party. On the other hand, Korean has a very strict honorific style, which expresses respect through a grammatical system. At the end of the thesis, three suggestions for polite language teaching were put forward, and the teaching plan was designed. First, understand the obstacles to students’ acquisition and increase the importance of polite language teaching. Second, pay attention to the understanding and application of pragmatic functions, and emphasize cultural cognition in combination with specific scenarios. Third, make up for the lack of teaching and teaching materials, and conduct polite language teaching in stages.

Study and Design of High Strength and Low Heat Generation Polymer Composites by Molecular Dynamics Simulation

Rui-Rui Zhang,Bin Wu,Peng Chen,Jia-Sheng Qian 한국고분자학회 2020 폴리머 Vol.44 No.6

The molecular dynamics simulation was used to study and design a polymer composites system with excellent mechanical strength and less heat generation in a dynamic process. A series of system factors such as filler loading, surface modification onto filler, and network of cross-linking filler particles on mechanical and heat generation of polymer composites are systematically considered. It is found that the surface grafting onto fillers can restrain the heat generation of polymer composite in the dynamic process, while it shows less effect on the mechanical property. A network of cross-linking filler particles can be fabricated by a combination of grafting chains onto fillers. By filling such a network into the polymer, the mechanical and heat generation properties of polymer composites are significantly improved. Simulation results can help experimental fabrication of polymer composites with excellent mechanical and heat generation properties.

A magnetostrictive self-powered biosensor based on Au-BaTiO3-FeGa & PDMS

Qiang Zhang,Meng Xu,Yan Liu,Chunyan Zhang,Rui Zhang,Zhiyuan Fu,Jianlong Ji,Riguang Zhang,Shengbo Sang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-

Piezoelectric flexible sensors have been used to detect biomolecules such as sweat and glucose because oftheir passive, simple structure and high sensitivity. This paper proposes a novel flexible piezoelectric Au-BaTiO3-FeGa & PDMS biosensor in which magnetostrictive deformation amplifies the surface stress generatedby biomolecules combining on the thin film. The modification process of bovine serum albumin(BSA) binding with the sensor was initially determined by the first principles approach. Then, the sensingmechanism was verified by finite-element simulation. Based on the simulation results, flexible Au-BaTiO3-FeGa & PDMS biosensors were prepared, modified, and measured. The structure, modification,and detection of the sensors were analyzed by digital microscopy, Fourier transform infrared spectrometry(FTIR), atomic force microscopy (AFM), and scanning electron microscopy (SEM). The responses ofthe biosensors detecting different BSA solution concentrations under magnetic fields were then investigated. Experimental results indicate that the biosensor has the highest sensitivity under a magnetic fieldof 30 mT.

Historical Long-term Exposure to Pentachlorophenol Causing Risk of Cancer - A Community Study

Zheng, Rui-Zhi,Zhang, Qing-He,He, Yi-Xin,Zhang, Qian,Yang, Lin-Shen,Zhang, Zhi-Hua,Zhang, Xiu-Jun,Hu, Jing-Ting,Huang, Fen Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.2

Background: Pervious studies suggested occupational workers exposure to pentachlorophenol (PCP) might contribute to increased risk of cancer. However, few studies have focused on associations between PCP and cancer risk at the community level. Objective: The present study was to explore the cancer risk for the community population living long-term in a PCP contaminated area. Methods: All the cancer cases diagnosed in 2009-2011 in Tongling City were collected. The cancer patients' residencies were geo-referenced in each district. The historical PCP usage for each district of Tongling was calculated as the PCP pollution index, which was further used to divide into PCP exposure categories. Standardized rate ratios (SRRs) of cancer incidence were applied to detect the cancer risk as exposure grade elevated. Correlation analysis was performed to analyze the relationship between PCP pollution and cancer incidence. Results: A total of 5,288 cancer cases (3,451 male and 1,837 female) were identified. PCP usage was correlated with the incidence of leukemia (r=0.88, P=0.002) for males, and with cancer of the esophagus for males (r=0.83, P=0.008) and females (r=0.71, P=0.020). Compared with the low exposure category, significant SRRs for total cancer sites was obtained for high PCP exposure category (SRR=1.61, 95%CI=1.59-1.62). Most SRR values of the cancer sites were significantly increased as exposure grade elevated and exposure time extended. Conclusion: The present study found that community residents living in the PCP contaminated area had increased risk of cancers. Leukemias, lymphomas and nasopharyngeal and esophageal cancers are most possibly associated with PCP exposure.

Strategies for Improvement of Agricultural Environment and Creation of the Venture Businesses from Agricultural Chemistry : Effect of Aeration Rates on Odor Emissions during Composting of Livestock Manure in the Enclosed Bench - Scale Reactor

(Rui Hong Zhang),(Hang Won Kang) 한국환경농학회 1998 98 International symposium sponsored by Institute Vol.- No.-

Effect of Saccharomyces cerevisiae Fermentation Product on Lactation Performance and Lipopolysaccharide Concentration of Dairy Cows

Zhang, Rui-Yang,Yoon, Ilkyu,Zhu, Wei-Yun,Mao, Sheng-Yong Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.8

To evaluate lactation performance and changes in plasma and fecal lipopolysaccharide (LPS) concentrations in response to the supplementation of Saccharomyces cerevisiae fermentation product (SC), two dairy farms were selected. On each farm, 32 cows in early to mid lactation (21 to 140 DIM) were blocked by parity and days in milk (DIM), and randomly assigned to one of the two treatments within block (Control or 56 g SC/cow/d). Effect of SC on lactation performance (daily) and changes in blood and fecal LPS level were examined on d 0 and 28 of supplementation. The results showed that SC supplementation increased lactation performance of dairy cows on both farms. On Farm 1, milk production, 3.5% fat corrected milk (FCM), and yield of milk fat and protein were greater (p<0.01) for cows supplemented with SC. Supplementation of SC increased percentage milk fat (p = 0.029) from 81 to 110 DIM. There was no significant effect (p>0.05) of SC supplementation on percentage of milk protein, dry matter intake and feed efficiency. On Farm 2, cows supplemented with SC had a greater (p<0.05) milk yield, percentage of milk fat and milk protein, yield of milk fat and protein, 3.5% FCM and feed efficiency. Supplemental SC had no effect on LPS concentrations in feces (p>0.05) while it trended to reduce (p = 0.07 or 0.207) the concentration in plasma. The results indicate that supplemental SC can increase lactation performance of dairy cattle and has potential for reducing plasma LPS concentration.

A novel multi-physics field optimization method for GaN HEMT circuit design

Zhang, Rui,Wang, Yibo,Xu, Honghua The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.3

A device modeling and topology design method suitable for high-power-density and high-temperature applicationare important to develop with the development of devices. A novel multi-physics analysis model based on GaN high electron mobility transistor (HEMT) is proposed in this paper. The coupled electromagnetic and electrothermal model for GaN HEMT is beneficial to simulate a device's external characteristic waveform affected by different stray parameters in the surrounding. In addition, the proposed method can accurately reflect the switching loss and transient switching process of GaN HEMT.

Long non-coding RNA NEAT1 promotes lipopolysaccharide-induced acute lung injury by regulating miR-424-5p/MAPK14 axis

Rui Zhang,Lina Chen,Fei Huang,Xiaorong Wang,Cuihong Li 한국유전학회 2021 Genes & Genomics Vol.43 No.7

Background Many long non-coding RNAs (lncRNAs) have been suggested to play critical roles in acute lung injury (ALI) pathogenesis, including lncRNA nuclear enriched abundant transcript 1 (NEAT1). Objective We aimed to further elucidate the functions and molecular mechanism of NEAT1 in ALI. Methods Human pulmonary alveolar epithelial cells (HPAEpiCs) stimulated by lipopolysaccharide (LPS) were served as a cellular model of ALI. Cell viability and cell apoptosis were determined by cell counting kit-8 (CCK-8) assay and fow cytometry, respectively. The expression of NEAT1, microRNA-424-5p (miR-424-5p), and mitogen-activated protein kinase 14 (MAPK14) was measured by quantitative real-time polymerase chain reaction (qRT-PCR) or western blot analysis. Caspase activity was determined by caspase activity kit. The infammatory responses were evaluated using enzyme-linked immunosorbent assay (ELISA). The oxidative stress factors were analyzed by corresponding kits. Results NEAT1 was upregulated in LPS-stimulated HPAEpiCs. NEAT1 knockdown weakened LPS-induced injury by inhibiting apoptosis, infammation and oxidative stress in HPAEpiCs. Moreover, miR-424-5p was a direct target of NEAT1, and its knockdown reversed the efects caused by NEAT1 knockdown in LPS-induced HPAEpiCs. Furthermore, MAPK14 was a downstream target of miR-424-5p, and its overexpression attenuated the efects of miR-424-5p on reduction of LPSinduced injury in HPAEpiCs. Besides, NEAT1 acted as a sponge of miR-424-5p to regulate MAPK14 expression. Conclusion NEAT1 knockdown alleviated LPS-induced injury of HPAEpiCs by regulating miR-424-5p/MAPK14 axis, which provided a potential therapeutic target for the treatment of ALI.

Phase Transition of As-Milled and Annealed CrCuFeMnNi High-Entropy Alloy Powder

Rui-Feng Zhao,Bo Ren,Guo-Peng Zhang,Zhong-Xia Liu,Jian-Jian Zhang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.09

The CrCuFeMnNi high entropy alloy (HEA) powder was synthesized by mechanical alloying. The effects of milling time and subsequent annealing on the structure evolution, thermostability and magnetic property were investigated. After 50 h of milling, the CrCuFeMnNi HEA powder consisted of a major FCC phase and a small amount of BCC phase. The crystallite size and strain lattice of 50 h-ball-milled CrCuFeMnNi HEA powder were 12 nm and 1.02%, respectively. The powder exhibited refined morphology and excellent chemical homogeneity. The supersaturated solid solution structure of the as-milled HEA powder transformed into FCC1, FCC2, a small amount of BCC and ρ phase in annealed state. Most of the BCC phase decomposed into FCC (mainly FCC2 phase) and ρ phases, and the dynamic phase transition was almost in equilibrium at 900 ℃. The saturated magnetization and coercivity force of the 50 h-ball-milled CrCuFeMnNi HEA powder were respectively 16.1 emu/g and 56.2 Oe.

Role of active and passive smoking in high-risk human papillomavirus infection and cervical intraepithelial neoplasia grade 2 or worse

Rui-Mei Feng,Shang-Ying Hu,Fang-Hui Zhao,Rong Zhang,Xun Zhang,Asya Izraelit Wallach,You-Lin Qiao 대한부인종양학회 2017 Journal of Gynecologic Oncology Vol.28 No.5

Objective: We performed a pooled analysis to examine cigarette smoking and householdpassive smoke exposure in relation to the risk of human papillomavirus (HPV) infection andcervical intraepithelial neoplasia grade 2+ (CIN2+). Methods: Data were pooled from 12 cross-sectional studies for cervical cancer screeningsfrom 10 provinces of China in 1999–2007. A total of 16,422 women were analyzed, alongwith 2,392 high-risk-HPV (hr-HPV) positive women and 381 CIN2+ cases. Pooled odds ratios(ORs) and 95% confidence intervals (CIs) were estimated using logistic regression modelscontrolling for sexual and non-sexual confounding factors. Results: There was an excess risk between active smoking and hr-HPV infection and CIN2+. Adjusted OR for ever smokers vs. never smokers was 1.45 (95% CI=1.10–1.91), for hr-HPVinfection and 1.89 (95% CI=1.03–3.44), for CIN2+. Passive smoking had a slightly increasedrisk on the hr-HPV infection with adjusted OR 1.11 (1.00–1.24), but no statistical associationwas observed between passive smoke exposure and CIN2+. Compared with the neither activenor passive smokers, both active and passive smokers had a 1.57-fold (95% CI=1.14–2.15)increased risk of HPV infection and a 1.99-fold (95% CI=1.02–3.88) risk of CIN2+. Conclusion: Our large multi-center cross-sectional study found active smoking couldincrease the risk of overall hr-HPV infection and CIN2+ adjusted by passive smoking andother factors. Passive smoking mildly increased the risk of HPV infection but not the CIN2+. An interaction existed between passive tobacco exposure and active smoking for hr-HPVinfection and the CIN2+.